Set Top Box Channel Surfing Latency Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional set top box television experiences significant latency in channel surfing due to the time delay in receiving and converting digital content, which is slower than traditional broadcast television, and requires high bandwidth, leading to increased equipment costs.
Innovation Solution
Downloading preloaded images associated with video programming to a set top box, allowing instantaneous display of images when switching channels, and streaming only requested channels over the network to reduce bandwidth demands and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If set top boxes receive and convert digital signals for channel surfing, then channel selection is possible, but display latency increases to about two seconds
Solution Approach 1:
The system pre-loads image data from video programming sources before the user actually requests a channel. When channel surfing is initiated, pre-loaded images are immediately displayed while the full digital signal conversion process continues in the background, eliminating the two-second latency by performing the image retrieval action in advance.
2Ease of operation
If set top boxes continuously receive digital signals for all channels, then channel surfing is enabled, but bandwidth requirements and equipment costs increase
Solution Approach 1:
The system extracts only the essential image data from the full digital video signal for pre-loading and display purposes. Instead of processing and transmitting complete high-bandwidth video streams for all channels, the system extracts and transmits only the necessary image portions, significantly reducing bandwidth consumption while maintaining channel surfing functionality.
3Manufacturing precision
If set top boxes process digital signals in real-time, then video quality is maintained, but channel switching speed decreases
Solution Approach 1:
The system performs preliminary processing of video data to extract and pre-load image frames before channel switching is requested. This allows the set top box to have ready-to-display image data immediately available when a channel change occurs, maintaining video quality through proper image processing while achieving fast channel switching speeds.
Data Source
AI summary
A system and method for enabling television watchers to “channel surf” faster and reduce the amount of bandwidth used over a network to communicate television channels to end-users. Electronic programming guide information and images associated therewith may be communicated to an end-user. An image associated with a video program may be displayed on an electronic display (e.g., television) in response to an end-user selecting a channel prior to video programming being displayed. By displaying an image prior to the video programming, the end-user may determine whether he or she wants to watch the video program prior to the video programming being displayed, which improves the speed of “channel surfing.” Because end-users can view the image when selecting a channel, a network can be configured to distribute the channels that are currently being watched rather than distributing many on a continuous basis, thereby preserving bandwidth.